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49221 (1998 SR129)
Classification: Main-belt Asteroid          SPK-ID: 2049221
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06258305190157194 3.4189e-08  
a 2.639478432998736 1.4467e-08 au
q 2.474291817233296 9.4688e-08 au
i 3.298594228013123 4.3804e-06 deg
node 49.36873072625154 8.9456e-05 deg
peri 25.70540465999535 0.00010149 deg
M 235.0571628147174 4.8617e-05 deg
tp 2459144.106281375783
(2020-Oct-21.60628138)
0.0002128 TDB
period 1566.302364377024
4.29
1.2877e-05
3.526e-08
d
yr
n .2298406796718239 1.8896e-09 deg/d
Q 2.804665048764175 1.5372e-08 au
  Orbit Determination Parameters
   # obs. used (total)      921  
   data-arc span      7714 days (21.12 yr)  
   first obs. used      1998-09-18  
   last obs. used      2019-11-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57839  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 06:40:19  

Additional Information
 Earth MOID = 1.48946 au 
 Jupiter MOID = 2.34779 au 
 T_jup = 3.391 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.0   n/a MPO449316  
diameter diameter 3.396 km 0.304 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.184   0.073 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

49221 (1998 SR129)          Discovered 1998-Sep-26 by LINEAR at Socorro
Reference: 20021120/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1998 SR129 = 2000 CO111 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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